<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>
  <body>
    <form action="/xxxx" method="POST" autocomplete="on">
      <input name="username" type="text" />
      <input type="submit" value="点它" />
      <button type="submit"><strong>使劲点它</strong></button>
      <hr />
      <input type="password" required />
      <input type="submit" value="Password" />
      <hr />
      <input type="color" />
      <hr />
      <input name="gender" type="radio" />boy
      <input name="gender" type="radio" />girl
      <hr />
      <input name="hobby" type="checkbox" /> sing
      <input name="hobby" type="checkbox" /> dance
      <input name="hobby" type="checkbox" /> basketball
      <input name="hobby" type="checkbox" /> rap
      <hr />
      <input type="file" />
      <hr />
      <input type="file" multiple />
      <hr />
      <input type="hidden" />
      <hr />
      <textarea cols="30" rows="10"></textarea>
      <hr />
      <select>
        <option value="">- please select your number -</option>
        <option value="1">One</option>
        <option value="2">Two</option>
        <option value="3">Three</option>
      </select>
    </form>
  </body>
</html>
